What if my bulb breaks?

Really, these lights contain mercury?

Yes, mercury vapor is used to transport electrical currents through the light bulb. Even though the amount of mercury is relatively small, fluorescent lights must be disposed of as hazardous waste. Mercury is a toxic heavy metal that can cause severe damage to the brain, nervous system, kidneys, lungs, and other vital organs. Pregnant women, infants, and young children are especially at risk.

What's the best way to store fluorescent tubes?

Ideally, place your old tubes in the same box in which they were purchased. Since fluorescent tubes are quite long, it can be difficult to find other storage options for them. If you can't find a large enough box, try to bring them to a collection center soon after changing them out. Wrap the tubes in a blanket or big piece of plastic and position them in your vehicle so they won't roll around.